- Fix parallel execution logic to properly handle JoinHandle<Result<R, E>> types
- Use join_all instead of try_join_all for proper Result handling
- Fix double question mark (??) issue in parallel execution methods
- Clean up unused imports in parallel and cache modules
- Ensure all performance optimization modules compile successfully
- Fix CI build failures caused by compilation errors
- Remove stray comma on line 31 that was causing dpkg-buildpackage to fail
- Fixes 'Parse error in debian/control, line 31, read: ,' error
- Control file now has proper syntax for Debian package building
- Should resolve CI build failure at Debian package creation step